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A transistor radio operates by means of a 12 V battery that supplies it with 56 mA current. If the cost of the battery is $3.71 and it lasts for 282 h, what is the cost per kWh to operate the radio in this manner?
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Question: One of the most worrisome waste products of a nuclear reactor is plutonium 239 ( 239 Pu). This nucleus is radioactive and decays by splitting into a helium-4 nucleus and a uranium-235 nucleus ( 4 He + 235 U), ...
Questio: A pump is required to lift a mass of 850 kg of water per minute from a well of depth 13.8 m and eject it with a speed of 17.2 m/s. part A. How much work is done per minute in lifting the water? part B. How much ...
Question: A parallel-plate air capacitor has a capacitance of 920 pF. The charge on each plate is 2.55 µC. (a) What is the potential difference between the plates? (b) If the charge is kept constant, what will be the po ...
Question: In one of the classic nuclear physics experiments at the beginning of the 20th century, an alpha particle was accelerated towards a gold nucleus and its path was substantially deflected by the Coulomb interacti ...
Question: A proton has an initial speed of 3.5 x 10 5 m/s. a) What potential difference is required to bring the proton to rest? b) What potential difference is required to reduce the initial speed of the proton by a fac ...
Question: A regulation table tennis ball has a mass of 2.7g and is 40mm in diameter. What is its moment of inertia about an axis that passes through its center? The response must be typed, single spaced, must be in times ...
Question: A thin film of MgF_2 (n= 1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500 nm and 625 nm. What is the thinnest film for which this can occur ...
Question: A) A sled is being pulled along a horizontal surface by a horizontal force F_vec of magnitude 600 N. Starting from rest, the sled speeds up with acceleration 0.08 {\rm m/s}^2 for 1 minute. B) Find the average p ...
A 78 g basketball is launched at an angle of 44.8? and a distance of 15.9 m from the basketball goal. The ball is released at the same height (ten feet) as the basketball goal's height. A basketball player tries to make ...
ADDITIONAL PROBLEM 1 Unpolarized light passes through two polarizers whose transmission axes are at an angle # with respect to each other. What should be the angle # between the transmission axes of the polarizers if it ...
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